[fedora-arm] Quick notes from Sunday....

[Jonathan Masters]

Hi Nico,

Thanks for your comments. We are aligned in our thinking because (per another mail I sent) we discussed shipping a known good dtb in the final 3.6 F18 images for those targets so that we know the upgrade to 3.7 will work, not using the append approach. Hope this brief explanation elaborates enough as I just got to DC and need to sleep (offline on Monday).

Thanks,

Jon.

-- 
Sent from my iPad

On Jan 20, 2013, at 22:51, Nicolas Pitre <nico at fluxnic.net> wrote:

> On Sun, 20 Jan 2013, Jon wrote:
> 
>> On Sun, Jan 20, 2013 at 8:34 PM, Jonathan Masters <jcm at redhat.com> wrote:
>> 
>>>   - dtb. Need to get dtb built into 3.6 based F18 RC images in order to
>>> be ready for 3.7. Especially OMAP and Tegra. Dennis prefers built in
>>> standard package, ok with doing so in 3.7 kernel (kernel-dtb) and pulling
>>> back into RC images as an exception this one time. Saves reissuing 3.6
>>> kernel package. Some testing done. Need to verify all targets have right
>>> bits in place and check 3.7 kernel upgrade.
>> Today I tried to get the pandaboard to boot using the 3.6 DTB from ausil
>> website, and was not successful loading the DTB from u-boot load addr.
>> I suspect for panda we might have to append the DTB to the zimage and run
>> mkimage on it.
>> That would be a great task for grubby or whatever part of the kernel
>> install that invokes mkimage.
> 
> Please don't do that (the DTB append that is).  This is a convenience 
> for platform where it is impossible to update the bootloader in order 
> to accommodate a DTB.  A Pandaboard certainly does not fall into that 
> category.
> 
> And this DTB append is not something I'd advise Fedora to ever support 
> unless there is absolutely no other way.  Most of the Fedora ARM targets 
> should have other ways.
> 
> U-Boot has had native device tree on ARM for quite a while now.  Please 
> ensure that the U-Boot version on your Panda is sufficiently recent.
> 
> 
> Nicolas
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